package dao.impl;

import dao.DeptDao;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import pojo.Dept;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;

public class DeptDaoImpl implements DeptDao {
    @Override
    public List<Dept> findAll() {
        SqlSession sqlSession = null;
        try {
//        引入mybatis-config.xml 配置文件
            String resource = "mybatis-config.xml";
            InputStream ResourcerAsStream = Resources.getResourceAsStream(resource);
//        创建会话工厂对象
            SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(ResourcerAsStream);
//        创建会话对象
            sqlSession = sqlSessionFactory.openSession();
//        执行查询
            List<Dept> list = sqlSession.getMapper(DeptDao.class).findAll();
            return list;
        }catch (IOException e){
            throw new RuntimeException(e);
        }finally {
            sqlSession.close();
        }
    }
}
